Those pesky critters are at it again, running rampant through the chimney and destroying your home; the repairs for this type of damage can be quite expensive. The Gelco 8 inch x 8 inch Base Stainless Steel Animal Guard can help; this durable device fits over your existing chimney structure to protect your chimney from raccoons, squirrels, and rats. No rodent can gnaw through the stainless steel cage, and no bird can build its nest as long as your chimney is covered by the Gelco 8 inch x 8 inch Base Stainless Steel Animal Guard.